Hi! I'm new in microcontrollers, and I been working with some basic assembly language programming, right know I'm stock trying to change two-button entries with two photoresistors, so

 

Hi! I'm new in microcontrollers, and I been working with some basic assembly language programming, right now I'm stuck trying to change two-button entries with two photoresistors, so the motor can follow the light, I try to make the change, but the motor stops moving, there still a change in the entry voltage but it stays stuck, I'm leaving the files to see if someone can help me I really appreciated.